Lock.



1. Twas,

LOCK.

APPLICATION FILED APR. 26- 1916.

Tamm Jan. 2,1917.

3 SHEETS-SHEET I.

J. F. IVES.

LOCK.

APPLICATION FILED APR. 26. me.

1 ,21 0,807. Patented Jan. 2, 1917.

3 SHEETSSHEET 2- 3mm JEIUes.

1. F. IVES.

A LOOK.

APPLICATION FILED {\PR. 26. l9l6. 1,210,807.

Patented Jan. 2, 191

3 SHEETS-SHEET 3 JAMES F. IVES, 0F NEWBERN, NORTH CAROLINA.

LocK.

To aZZ whom it may concern:

Be it known that I, JAMES F. Ivns, a citi zen of the United States, residing at Newbern, in the county of Craven and State of North Carolina, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This invention relates to looks, and has for its object the provision of a simple and efiicient lock which will dispense with the use of springs.

The invention is applicable to all forms of door locks,dpadlocks, or other locks, and seeks to provi e a device which will act in stantly to secure a door or other part upon release of the knob or key.

The invention also seeks to provide a lock which will be composed of few parts and will not be apt to get out of order.

The invention is illustrated in the accompanying drawings and will be hereinafter fully described, the novel features thereof being particularly pointed out in the claims following the description.

In the drawings: Figure 1 is an elevation of a mortise lock embodying my invention, the face plate of the lock casing being removed and parts being shown in section; Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is a section taken on the line 3-3 of Fig. 1; Fig. 1 is a detail perspective view of the gravitating member; Fig. .5 is a perspective View showing the rocking arms for lifting the gravitating member or weight and thereby withdrawing the latch; Fig. 6 is a view similar to Fig. 1, and showing the invention applied to an inside look; Fig. 7 is a detail perspective view of the working members of the lock shown in Fig. 6 disassembled but approximately their assembled positions; and Fig. 8 is a transverse section taken through the plane of the knob spindle.

The lock casing 1 in the form shown in Figs. 1 to 5 is adapted to be inserted in a mortise formed in a door 2, as will be readily understood. In the sides of the casing 1 are formed bearings for the knob spindles 3 and 4 which are arranged in axial alinement and are coupled at their centers by a threaded or other pivotal connection, indicated at 5, whereby the spindles may rotate independently and permit the door to be opened from the inside while it will be locked against opening from the outside. Suitable knobs, :of course,

are secured upon Specification of Letters Patent.

Patented J an. 2, 1917.

Application filed April 26, 1916. Serial No. 93,687.

the respective spindles in the usual manner, but as the knobs and their mountings form no part of the present invention, illustration of the same has been deemed unnecessary.

In the front or outer edge of the casing 1 is provided an opening through which the latch 6 is mounted to slide. Within the casing, at a point near the upper end thereof and adjacent the front of the same, I pivot a weight or gravitating member 7 as shown 1 p at 8, the said weight or gravitating member being provided with an opening 9 in its lower front corner to receive a pin 10 whereby the latch 6 will be pivotally connected thereto. The latch may be constructed with a slot 11 to accommodate the relative angular movement of the latch and the weight or any other well-known means may be adopted to accommodate the said movement.

As shown most clearly in Fig. 4, the weight 7 is constructed with a large slot 12 to pass around the knob spindles and permit movement of the weight past the same, and it is also provided with a smaller slot 13 concentric with the openlng 14 which receives The gravitatmg member 7 also carries laterally extending pins or cylindrical members 21 which are adapted to rest upon the said rocking arms and receive the thrust of the same without establishing an excessively extended contacting surface and, conse quently, causing excessive friction between and wear upon the parts.

By reference to Figs. 2, 3 and 5 more particularly. it will be noted that each knob spindle carries a rocking arm adapted to lift the weight of gravitating member 7. The rocking arm 22, which is carried by the inner spindle 3, has a hub 22 adapted to fit upon the said spindle so as to rotate therewith, and it is also provided with an annular recess24c in its inner face adapted to receive the end of the hub 25 which fits upon the outer spindle and carries the rocking arm 23.

The rocking arms 22 and 23 extend radially from their respective hubs and are arranged 1 below the lower edge of the projecting portion 18 of the weight 7. The rocking arm 23 of the outer spindle is extended at one end so as toproject into the plane of the lower latch pin 17 as shown at 26., where by, when the said lower latch pin 17 is pushed inwardly, it willbe caused to bear against the extended end 26 of the rocking arm 23 and prevent movement of the said arm whereby the lock will be set against manipulation through the knob from the outside but may be manipulated from the inside of the building. 7

To. permit opening of the door from the outside, when the latch 17 has been set to prevent such operation by means of the knob spindle 4, I provide a lever 27 which is pivotally mounted within the casing 1 at a point 28 below the lowest position of the a weight 7 and in the same vertical plane with the weight, the free end of said lever being turned upwardly, as shown at 29, so as to engage the lower edge of the weight when actuated by a proper key and thereby lift the weight so as to withdraw the latch 6 and permit the door to be opened. The occupant of the building will, of course, be provided witha key which may be inserted into the look from the outside and pivotally supported in a socket 30 providedin the casing 1 below the lever 27 and adjacent thepivot of the same. In order that the lever may not drop below the said keyreceiving socket, a tubular rest 3lis provided within the lock casing, and this rest may also be utilized as .a boss to receive a screw or bolt by which the sides of the lock casing are held in position. 7

Below the gravity controlled latch, a bolt 32 is slidably mounted within the casing and rests upon a pin 33 which also serves as a stop to limit the movements of the bolt by engaging the ends of a notch 34 in the lower edge thereof. This bolt is provided with the usual recess 35 adapted to be-engaged by a key,and a tumbler 36 is pivotally mounted within the casing adjacent the said bolt and providedfwith lugs 37 adapted to engage a lug 38 on the upper edge of the bolt and thereby hold the bolt against movement in either direction until a key has been inserted in the lock and manipulated in the usual manner.

It is thought the operation of my improved lock will be readily understood.

When the dead latch is in the position shown in Fig. 1, the lock may be operated by either knob spindle. The weight 7 tends to hold the latch 6 projected so as to engage the hasp or keeper upon the door frame and thereby i maintain the door in a closed position, the

downward movement of the weight being limited by the upper end of the slot 12 endirection, the lifting arm carried by said spindle will be caused to rock and thereby lift the weight about its pivot 8 so that the latch 6 will be drawn into the casing and the door may be opened. It will also be noted that the full benefit of the weight is obtained whether the spindle be turned in one or the other direction. If the lower latch pin 17 is pushed inwardly, the end of the same will be brought into engagement with the adjacent end of the arm 23 carried by the outer knob spindle and, consequently, if it be attempted to rotate or rock the said spindle, such movement will be resisted by the engagement of the dead latch with the 7 is preferably provided with a socket, indicated in dotted lines at 39, which will fit around the extremity 26 of, said lifting arm and thereby positively hold thesame. Inasmuch as the lifting arm carried, by the inner spindle is shorterv than that carried by the outer spindle and is disposed'in a vertical plane nearer the face of the weight 7, the dead latch 17 will not engage s'aidinner lifting arm and, consequently, the door maybe opened from the inside of the building 'or room at any time. If a proper key is inserted' in the lock from the outside" and turned against the lifting lever'27, said lever will be carried against the lower edge of the weight and the weight swung upwardly vabout its pivot without causing movement of either liftlng arm, inasmuch as the welght '18 not connected to either of said arms nor to either spindle but is permitted to move 'past the spindles by means of theslot 12.

It will be readily noted that I have prow vided a lock which is not dependent upon the action of springs of any wind for its successful operation and which is, therefore, not

liable to get out of order and require repairing or replacing of some of the parts; It

will also be noted that the parts are very cially adapted to cheaper locks where a lower cost is a consideration. In this form of my invention, a lock casing 40 is employed and a bolt 41 is mounted in the lower portion of said casing and controlled by a tumbler 42, similar in all essentials to the bolt and tumbler shown in Fig. 1. The knob spindle 43 in this form of the invention extends through the casing and both knobs are secured upon the one spindle, being disposed, however, at opposite sides of the look, as will be readily understood. Within the casing, a hub or sleeve 44 is fitted to the knob spindle so as to rotate therewith, and upon the upper side of the said hub is provided a rocking or lifting arm or lever 45 which acts upon a weight 46 pivoted in the upper corner of the casing by means of a pin 48 inserted through the extremity of a standard or post 47 rising from the forward end of the weight. A pin or stud 49 is carried by the weight at the lower front corner of the same, and the latch 50 is pivotally mounted upon the said stud and projects through the end of the casing 40, as shown and as will be readily understood. The rocking and lift-- ing arm 45 has its extremities 51 curved downwardly slightly so as to move easily against the surface engaged by them without undue wear upon the same, and it will be readily understood that rocking of the knob spindle in either direction will cause one end of the said arm to rise and, consequently, lift the weight 46 so that the latch 50 will be withdrawn. The rocker arm may bear directly against the under edge of the weight but I prefer to interpose a lever 52 consisting of a strip of relatively thin stiff metal having an eye 53 at one end by which it is pivotally hung on a pin 54 at the rear of the casing. This lever extends between the rocking arm and the weight at least as far as the forward extremity of the rocking arm. When the arm is rocked, it will swing the lever upward and the lever in turn will raise the weight. By this arrangement, the lifting strain will always be applied to the weight at the same point. On the inner or rear edge of the post 47 is a shoulder 55 which may be engaged by the shouldered end 56 of a dead latch 57 which is mounted in the upper portion of the lock casing and pro jects through the top of the same. When the dead latch engages the post, the latch 50 will be set against manipulation by a person outside the room. It will be readily noted that the operation of this form of the invention is in all essential particulars the same as the operation of the previously described form and it is also to be noted that in both forms of the device the latch may be easily lifted from its pivotal connection with the weight and then reversed so that the door may be hung to swing in either direction, according to varying conditions.

Having thus described the invention, what is claimed as new is:

1. The combination of a latch, a weight pivotally hung above the latch and connected therewith to hold the same normally projected and having an overhanging portion along its upper edge, spindles disposed below the said overhanging portion, lifting arms carried by the respective spindles and adapted to act 'upon said overhanging portion of the weight to lift the weight and withdraw the latch, and a key actuated lever mounted below the weight and adapted to engage the lower edge of the same.

2. The combination of a latch, a weight pivotally hung above the latch and connected therewith to hold it normally projected, a spindle, a rockin arm on said spindle adapted to lift the welght, and a lever fulcrumed at one end below the weight at one side of the vertical plane of the spindle and having its opposite end in contact with the lower edge of the weight at the opposite side of the vertical plane of the spindle.

3. The combination of a latch, a weight pivoted above the latch and connected therewith to hold it normally projected, a pair of axially alined spindles mounted for independent rotation, lifting arms on said spindles adapted to actuate the weight, and a dead-latch pin having a socket to engage the end of the lifting arm on the outer spindle and hold the same against movement.

In testimony whereof I aflix my signature.

JAMES F. IVES. [1,. 5.]

Gopies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

